Revelation 16:13-21

13And I saw three loathsome spirits like frogs, leaping from the mouth of the dragon (Satan) and from the mouth of the beast (Antichrist, dictator) and from the mouth of the false prophet;

14for they are [actually] the spirits of demons, performing [miraculous] signs. And they go out to the kings of the entire inhabited earth, to gather them together for the war of the great day of God, the Almighty.

15(“Behold, I am coming like a thief. Blessed is he who stays awake and who keeps his clothes [that is, stays spiritually ready for the Lord’s return], so that he will not be naked—spiritually unprepared—and men will not see his shame.”)

16And they (demons) gathered the kings and armies of the world together at the place which in Hebrew is called Har-Magedon (Armageddon).

17Then the seventh angel poured out his bowl into the air, and a loud voice came out of the temple from the throne [of God], saying, “It is done. [It is all over, it is all accomplished, it has come.]”

18And there were flashes of lightning and loud rumblings and peals of thunder; and there was a massive earthquake—nothing like it has ever occurred since mankind originated on the earth, so severe and far-reaching was that earthquake.

19The great city was split into three parts, and the cities of the nations fell. And God kept in mind Babylon the great, to give her the cup of the wine of His fierce and furious wrath.

20Then every island fled away, and no mountains could be found.

21And giant hailstones, as heavy as a talent, fell from the sky on the people; and people reviled and spoke abusively of God for the plague of the hail, because the plague was so very great.